The common clubrush used to be material for making chairs. Today, it is rather rare here.

As more trees started growing in the Weerribben, two mammal species made their way to the national park. They are the pine marten, and the beech marten or stone marten. Stone martens are not afraid of coming close to human houses. They search for fish oil in motor cars. Jaap Dolstra found a sleeping stone marten in the attic of his house in the Weerribben. It had gnawed its way through the thatched roof. Only a radio with loud music managed to get the marten away.